Core Web Vitals: Measuring User Experience
Introduction
Core Web Vitals are Google's metrics for evaluating user experience, focusing on load speed, responsiveness, and visual stability.
What are Core Web Vitals?
They are metrics like LCP, FID, and CLS used to measure website performance.
Why do Core Web Vitals matter for SEO?
They affect rankings and user satisfaction by assessing real-world performance.
Key Concepts or Points
Largest Contentful Paint (LCP)
Measures loading performance — aim for under 2.5 seconds. Read more
First Input Delay (FID)
Measures interactivity delay — ideal is under 100ms. Read more
Cumulative Layout Shift (CLS)
Measures visual stability — should be below 0.1. Read more
Detailed Tips or Best Practices
1. Optimize Images and Media
Use modern formats and responsive sizing to reduce load times and improve LCP.
2. Minimize JavaScript
Reduce script size and defer non-critical JS to lower FID.
3. Use Font Display Swap
Avoid invisible text delays by applying CSS strategies like `font-display: swap`.
4. Reserve Space for Ads and Images
Prevent layout shifts by defining fixed sizes for dynamic elements.
5. Monitor Regularly with PageSpeed Insights
Track performance changes over time and optimize continuously.
Conclusion
Prioritizing Core Web Vitals improves SEO and user satisfaction. Track and optimize them to build fast-loading websites.
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